<html><body><div class='definition'><pre><a href="psi_element://#module#OptionalAndUnionTypesContainingTypeVars">OptionalAndUnionTypesContainingTypeVars</a><br>def <b>f</b>(x1: Optional[T],
      x2: Union[T,&nbsp;Tuple[Any,&nbsp;Any]]) -&gt; None</pre></div></body></html>